CN105900264B - Electrochemical accumulator - Google Patents
Electrochemical accumulator Download PDFInfo
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- CN105900264B CN105900264B CN201480058594.XA CN201480058594A CN105900264B CN 105900264 B CN105900264 B CN 105900264B CN 201480058594 A CN201480058594 A CN 201480058594A CN 105900264 B CN105900264 B CN 105900264B
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- interface
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- 210000000352 storage cell Anatomy 0.000 claims abstract description 33
- 210000004027 cell Anatomy 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 27
- 229910001092 metal group alloy Inorganic materials 0.000 claims abstract description 23
- 150000002739 metals Chemical class 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910001416 lithium ion Inorganic materials 0.000 claims description 3
- 239000012212 insulator Substances 0.000 claims 12
- 238000005304 joining Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/561—Hollow metallic terminals, e.g. terminal bushings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/534—Electrode connections inside a battery casing characterised by the material of the leads or tabs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/562—Terminals characterised by the material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention relates to an electrochemical accumulator comprising at least one housing, at least one electrochemical cell arranged in the housing, and at least two electrical connection terminals for electrically contacting the accumulator, wherein at least one of the connection terminals is formed by at least two sections of mutually connected different metals or metal alloys. The invention also relates to a method for producing an electrochemical storage cell.
Description
The present invention relates to an electrochemical accumulator according to the preamble of claim 1. The invention further relates to a method for producing an electrochemical storage cell according to the preamble of claim 12.
Such electrochemical storage cells are used in many technical fields. The invention relates in particular to the field of accumulators for electric and hybrid vehicles. These types of batteries impose special requirements in terms of efficiency, weight and manufacturing costs.
The aim of the invention is to design electrochemical storage cells more efficiently for mass production, in particular for automated production processes in automotive engineering applications. An improved method for manufacturing such a battery is also described.
This object is achieved according to claim 1 by an electrochemical storage cell comprising at least one housing, at least one electrochemical cell arranged in the housing, and at least two electrical connection terminals for electrically contacting the storage cell, wherein at least one of the connection terminals is formed by at least two sections connected to one another, the at least two sections being formed from different metals or metal alloys. The at least one connection terminal can consist, for example, of two separate, separately produced metal parts which form two sections of the connection terminal, which sections are formed from different metals or metal alloys. This type of connection terminal, which is also referred to as a bimetallic or multi-metal connection terminal, is better able to meet many special requirements with regard to the production of individual batteries and battery packs having a plurality of individual batteries. In practice, many problems are associated with the chemical nature of the chemicals used to construct the electrochemical cells. In order to prevent corrosion consequences, the choice of materials for producing the connection terminals is limited to specific materials based on the type of cell technology employed. Connecting a plurality of storage batteries, for example in series, is nowadays achieved by connecting, for example, screwable power supply busbars or busbars to one another. With respect to improving the manufacturing process, a welded or brazed connection is more advantageous in many cases. However, since the material selection for the connection terminals is limited, in many cases, such connection is impossible or only the manufacturing cost can be increased. By the proposal of the invention, at least one of the connection terminals is formed by at least two sections connected to one another and formed from different metals or metal alloys, it being possible to convert the material most suitable for contacting the electrochemical cells into the material most suitable for the external electrical connection of the connection terminal to the connection terminal of another battery.
The at least one connection terminal, which comprises at least two sections connected to one another and formed from different metals or metal alloys, can be formed as a screw-on connection terminal or as a connection terminal for a screw-free connection. In the former case mentioned, the connection terminal can be connected with a connection terminal of another electrochemical accumulator, for example, by a screw-on connection of a power supply bus or bus bar. In the latter case mentioned, the connection can be effected, for example, by soldering or welding of the power supply bus bars or bus bars.
According to an advantageous further development of the invention, only a first section of the at least two sections of the connecting terminal is connected in direct mechanical and electrical contact with a positive or negative terminal of at least one battery cell arranged in the housing. The other second section of the connecting terminal is indirectly connected to the battery cell terminal only via the first section. This can thus prevent undesired chemical and/or electrochemical processes that might otherwise occur due to the different materials of the first section of the connection terminal and the battery cell terminal. The first section can, for example, be made of the same material as the battery cell terminal, which is in direct mechanical and electrical contact with the battery cell terminal.
According to an advantageous further development of the invention, a section of the connecting terminal has copper or consists of copper. The other section of the connecting terminal has aluminum or is composed of aluminum. In particular, the aforementioned first section of the connecting terminal, which is in direct mechanical and electrical contact with the positive or negative terminal of the battery cell, can have copper or consist of copper.
In an advantageous further development, the at least one connection terminal shows an interface between two mutually connected sections of different metals or metal alloys, which interface is substantially parallel to a housing surface, wherein the connection terminal is arranged on the housing surface of the battery housing. This aspect therefore ensures that the second section of the connecting terminal, which is connected to the battery cell terminal only indirectly via the first section, is sufficiently spaced apart from the battery cell terminal. The interface may be a flat or uneven surface. In particular, the interface surface can be formed as an interface surface. The substantially parallel interfaces thus facilitate the production of the multi-metal connection terminals and thus the production of the entire electrochemical storage cell. In particular, the two sections of the connection terminal, which are formed from different metals or metal alloys, do not need to be connected to one another, for example by spin welding, until the first section has been connected to the terminal of the battery cell during the manufacturing process.
According to an advantageous further development of the invention, the at least one connection terminal projects through a housing wall of the battery. The connection point of the at least two interconnected sections made of different metals or metal alloys is located within the housing or at least in a region that is sealed with respect to the outer environment of the housing. This has the following advantages: the housing protects the connection between the two interconnected sections from the external environment (in particular moisture).
According to an advantageous further development of the invention, the at least one connection terminal, in particular the connection terminal formed by at least two interconnected sections made of different metals or metal alloys, is a negative connection terminal of the battery. In certain battery technologies (for example lithium battery cells), this can therefore prevent particularly undesirable consequences in the region of the negative connection terminals.
In an advantageous further development, the at least one second connection terminal of the battery is formed from the material of the battery housing. The second connection terminal and the housing can be made of aluminum or have aluminum, for example. This makes it possible to manufacture such a battery more simply and economically. In particular, it can be provided that the second connection terminal is molded into a housing wall of the battery. The second connection terminal is thus shaped so as to project from the outer contour of the housing, for example in the form of a rotationally symmetrical, cylindrical, frustoconical or prismatic surface. This makes it possible to provide a particularly economical second connection terminal. In particular, no separate component is therefore required, nor is it connected to the battery.
The housing of the battery can in particular be shown in a prismatic shape, for example substantially rectangular, with rounded edges and/or corners, where applicable.
According to an advantageous further development of the invention, the at least one battery cell in the battery housing is a lithium ion battery cell. This is advantageous for providing electric vehicles and hybrid vehicles with a battery having a high storage capacity in a small space.
According to an advantageous further development of the invention, at least one, a plurality or all of the connection terminals have a rotationally symmetrical configuration.
The initially specified object is also achieved, according to claim 12, by a method for producing an electrochemical storage cell comprising at least one housing, at least one electrochemical cell arranged in the housing, and at least two electrical connection terminals for electrically contacting the storage cell, wherein at least one of the connection terminals is formed by at least two interconnected sections formed from different metals or metal alloys, and the sections are connected together. According to an advantageous further development of the invention, the at least two sections formed from different metals or metal alloys can be joined together by a friction welding process (for example spin welding). This facilitates a simple and economical manufacture of the at least bimetallic connecting terminal. In particular, the connection terminal can be prefabricated from two or more sections and subsequently installed into the battery.
The spin welding can be carried out in particular in such a way that, before the connection, at least two sections of the connection terminal are moved relative to one another in a rotational movement and are pressed against one another in the process. This generates heat which eventually causes the two sections to weld together. Spin welding is therefore a special form of friction welding. During the rotational movement, either one section of the connection terminal is fixed and the other section is moved, or the two sections can be moved toward one another. The rotational movement may be a continuous rotational movement in the same rotational direction or a rotational movement with alternating rotational directions.
The invention will be explained in more detail below by way of example with reference to the accompanying drawings.
Wherein:
fig. 1 shows an electrochemical storage cell in an isometric view;
fig. 2 shows a portion of the electrochemical storage cell of fig. 1 in a cross-sectional view; and
fig. 3 shows another embodiment of an electrochemical storage cell in an isometric view.
Corresponding elements are denoted by the same reference numerals in the figures.
Fig. 1 shows an electrochemical storage cell 1 having a prismatic, i.e. substantially rectangular, housing 2. Two electrical connection terminals 4, 5 project from the housing 2 of the battery 1 on a housing wall 3 of the housing 2. The connection terminals 4, 5 are electrically connected to one or more electrochemical cells disposed within the housing. The connection terminal 4 may have a cylindrical shape as can be seen in fig. 1, for example. The other connection terminal 5 is shown in a more complex shape, which will be explained in more detail below with reference to the cross-sectional view of fig. 2.
The connecting terminal 5 is designed as a connecting terminal having at least two sections connected to one another and formed from different metals or metal alloys. This is illustrated in fig. 2 by the upper section 11 of the connecting terminal and the lower section 10 of the connecting terminal arranged below. Between the sections 10, 11, an interface 12 can be seen, which extends substantially parallel to the housing wall 3 or the respective outer surface of the housing wall 3. The upper section 11 is made of aluminum, for example, and the lower section 10 is made of copper. The lower section 10 is connected to the electrical connections 7 of the lithium-ion battery cells 6 arranged in the housing 2 by means of metal strips 8, 9 (for example copper strips).
These components 8, 9, 10 are made of the same metal material. They may be joined together, for example, by welding. The upper section 11 of the connection terminal 5 can be welded to the lower section 10 by spin welding.
The housing 2 may be made of a metallic, i.e. electrically conductive, material. For this reason, the seal 13 is made of an electrically insulating material, in particular a plastic material. The connection terminal 5 is inserted through the seal 13 into the housing opening of the housing wall 3 and is additionally sealed off from the housing. The seal 13 prevents the external environment from influencing, in particular, components inside the housing 2 or the connection point between the sections 10, 11 of the connection terminal 5. The upper section 11 of the connection terminal 5 may additionally be held in the seal 13 by a washer 14 to protect and mechanically support the seal 13.
Fig. 3 shows a further exemplary embodiment of an electrochemical storage cell, which differs from the exemplary embodiment of fig. 1 in a different exemplary embodiment of the connection terminal 4. It can be seen that the connection terminal 4 has a rectangular outline when viewed from above. The connection terminals 4 may be made of the material of the housing 2 (e.g., aluminum) and formed directly on the housing wall 3 by a molding process. In this way, it is not necessary to manufacture and install the second connection terminal 4 as a separate member.
Claims (16)
1. An electrochemical storage cell (1) comprising:
at least one housing (2);
at least one electrochemical cell (6) disposed in the at least one housing (2); and
at least two electrical connection terminals (4, 5) for electrically contacting the electrochemical storage cell (1), wherein at least one of the at least two electrical connection terminals (4, 5) is formed by at least two sections (10, 11) connected to each other, the at least two sections (10, 11) being formed of different metals or metal alloys and being connected at an interface, wherein the interface is located within a channel defined in a housing wall of the at least one housing, wherein a fastening assembly extends between the channel and the at least one electrical connection terminal, wherein the at least one electrical connection terminal is rotationally symmetric with respect to a central axis of the at least one electrical connection terminal, wherein an upper section of the at least two sections connected to each other extends from the interface to an upper surface of the upper section and protrudes beyond the fastening assembly, and wherein a lower section of the at least two sections being interconnected comprises a flange extending from a lower surface of the lower section towards the interface, wherein the lower surface extends substantially parallel to the interface between diametrically opposite sides of the flange, and wherein the at least one electrical connection terminal comprises a further flange formed in the upper section and between the upper surface and the interface, and wherein the further flange extends along the central axis from a middle surface of the further flange towards the interface, wherein the middle surface is axially located between the upper surface and the interface.
2. Electrochemical accumulator according to claim 1, wherein the lower section (10) of the at least two interconnected sections (10, 11) is connected in direct mechanical and electrical contact with the positive or negative terminal (7) of the at least one electrochemical cell (6), and the upper section (11) is indirectly connected with the positive or negative terminal (7) of the at least one electrochemical cell (6) through the lower section (10).
3. Electrochemical accumulator according to claim 1, wherein one of the at least two sections (10, 11) connected to each other has or consists of copper and the other of the at least two sections (10, 11) connected to each other has or consists of aluminum.
4. An electrochemical storage cell according to claim 1, wherein the interface (12) extends substantially parallel to the housing wall.
5. Electrochemical storage cell according to claim 1, wherein the at least one electrical connection terminal (4, 5) is sealed with respect to the at least one housing (2).
6. An electrochemical storage cell according to claim 1, wherein the at least one electrical connection terminal (4, 5) is a negative connection terminal of the electrochemical storage cell (1).
7. An electrochemical storage cell according to claim 1, wherein at least one further electrical connection terminal (4) of the at least two electrical connection terminals is formed from a casing material of the electrochemical storage cell (1).
8. An electrochemical storage cell according to claim 7, wherein the at least one further electrical connection terminal (4) is molded into the housing wall (3) of the electrochemical storage cell (1) such that the at least one further electrical connection terminal (4) protrudes from the outer contour of the at least one housing (2).
9. An electrochemical storage cell according to claim 1, wherein the at least one electrochemical cell (6) is a lithium ion cell.
10. Electrochemical storage cell (1) according to claim 1, wherein the at least two electrical connection terminals (4, 5) are arranged on a first housing wall (3) of the at least one housing (2),
wherein the lower section of the at least two interconnected sections extends from the interface to the lower surface of the lower section, wherein the lower surface is connected to a positive or negative terminal of the at least one electrochemical cell; and is
Wherein the fastening assembly comprises:
a gasket disposed around a periphery of the at least one electrical connection terminal, wherein the gasket is located between the upper surface of the upper section and the interface; and
an insulator disposed about the periphery of the at least one electrical connection terminal, wherein the insulator extends from the lower surface of the lower section and protrudes beyond the interface;
wherein the insulator is disposed about a periphery of the washer and extends along a height of the washer;
wherein the gasket is axially disposed between the further flange and a receiving surface of the insulator with respect to the central axis of the at least one electrical connection terminal when the further flange is formed in the upper section,
wherein the insulator is a one-piece component,
wherein a radial dimension of the further flange extends substantially parallel to the interface.
11. Electrochemical storage cell (1) according to claim 1, wherein the at least one housing (2) is a prismatic housing,
the upper section comprises a connecting portion extending between the further flange and the upper surface, and wherein a radial dimension of the connecting portion at the further flange is smaller than a radial dimension of the upper section at the interface.
12. An electrochemical storage cell (1) comprising:
at least one housing (2);
at least one electrochemical cell (6) disposed in the at least one housing (2); and
at least two electrical connection terminals (4, 5) for electrically contacting the electrochemical storage cell (1), wherein at least one of the at least two electrical connection terminals (4, 5) is formed by at least two sections (10, 11) connected to each other, the at least two sections (10, 11) being formed of different metals or metal alloys and being connected at an interface, wherein the interface is located within a channel defined in a housing wall of the at least one housing, wherein an insulator extends between the channel and the at least one electrical connection terminal, wherein the at least one electrical connection terminal is rotationally symmetric with respect to a central axis of the at least one electrical connection terminal, wherein an upper section of the at least two sections connected to each other extends from the interface to an upper surface of the upper section and protrudes beyond the insulator, and wherein a lower section of the at least two sections that are connected to each other comprises a flange extending from a lower surface of the lower section towards the interface, wherein the lower surface extends substantially parallel to the interface between diametrically opposite sides of the flange,
wherein the at least one electrical connection terminal comprises a further flange formed in the upper section and between the upper surface and the interface surface, and wherein the further flange extends along the central axis from a middle surface of the further flange towards the interface surface, wherein the middle surface is axially located between the upper surface and the interface surface.
13. A method for manufacturing an electrochemical storage cell (1), the method comprising:
providing at least one housing (2), wherein at least one electrochemical cell (6) is arranged in the at least one housing (2) and at least two electrical connection terminals (4, 5) for electrically contacting the electrochemical storage cell (1) extend from the at least one housing;
forming at least one of the at least two electrical connection terminals (4, 5) from at least two sections (10, 11), the at least two sections (10, 11) being formed from different metals or metal alloys, wherein the at least two sections formed from different metals or metal alloys are connected at an interface; and
disposing the at least one electrical connection terminal within a channel defined in a housing wall of the at least one housing, wherein the interface is disposed within the channel, wherein a fastening assembly extends between the channel and the at least one electrical connection terminal, wherein the at least one electrical connection terminal is rotationally symmetric about a central axis of the at least one electrical connection terminal, wherein an upper section of the at least two sections formed from different metals or metal alloys extends from the interface and protrudes beyond the fastening assembly, and wherein a lower section of the at least two sections formed from different metals or metal alloys comprises a flange extending from a lower surface of the lower section towards the interface, wherein the lower surface extends substantially parallel to the interface between diametrically opposite sides of the flange,
wherein the at least one electrical connection terminal comprises a further flange formed in the upper section and between an upper surface of the upper section and the interface, and wherein the further flange extends along the central axis from a middle surface of the further flange towards the interface, wherein the middle surface is axially located between the upper surface and the interface.
14. A method according to claim 13, wherein the method comprises joining together the at least two sections (10, 11) formed of different metals or metal alloys at the interface by a friction welding process;
the method further includes connecting the lower surface of the lower segment to a positive or negative terminal of the at least one electrochemical cell, wherein the lower surface extends substantially parallel to the housing wall,
wherein the fastening assembly includes a washer disposed about a periphery of the upper section and an insulator disposed about a periphery of the washer, wherein the insulator extends from the lower surface along a height of the washer,
wherein the gasket is located between the upper surface of the upper section and the interface; and said insulator is a one-piece member extending from said lower surface of said lower section and projecting beyond said interface;
wherein the upper section comprises a connecting portion extending between the further flange and the upper surface, and wherein a radial dimension of the connecting portion at the further flange is smaller than a radial dimension of the upper section at the interface; and is
Wherein the lower segment extends from the interface surface to the lower surface of the lower segment.
15. The method according to claim 13, wherein the at least two electrical connection terminals (4, 5) are arranged on a first housing wall (3) of the at least one housing (2).
16. A method for manufacturing an electrochemical storage cell (1), the method comprising:
providing at least one housing (2), wherein at least one electrochemical cell (6) is arranged in the at least one housing (2) and at least two electrical connection terminals (4, 5) for electrically contacting the electrochemical storage cell (1) extend from the at least one housing;
forming at least one of the at least two electrical connection terminals (4, 5) from at least two sections (10, 11), the at least two sections (10, 11) being formed from different metals or metal alloys, wherein the at least two sections formed from different metals or metal alloys are connected at an interface; and
disposing the at least one electrical connection terminal within a passage defined in a housing wall of the at least one housing, wherein the interface is disposed within the channel, wherein an insulator extends between the channel and the at least one electrical connection terminal, wherein the at least one electrical connection terminal is rotationally symmetrical about a central axis of the at least one electrical connection terminal, wherein an upper section of the at least two sections formed of different metals or metal alloys extends from the interface and protrudes beyond the insulator, and wherein a lower section of the at least two sections formed from different metals or metal alloys comprises a flange extending from a lower surface of the lower section towards the interface, wherein the lower surface extends substantially parallel to the interface surface between diametrically opposite sides of the flange;
wherein the at least one electrical connection terminal comprises a further flange formed in the upper section and between an upper surface of the upper section and the interface, and wherein the further flange extends along the central axis from a middle surface of the further flange towards the interface, wherein the middle surface is axially located between the upper surface and the interface.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201310112060 DE102013112060A1 (en) | 2013-11-01 | 2013-11-01 | Electrochemical accumulator |
| DE102013112060.1 | 2013-11-01 | ||
| PCT/EP2014/073022 WO2015063037A1 (en) | 2013-11-01 | 2014-10-27 | Electrochemical accumulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105900264A CN105900264A (en) | 2016-08-24 |
| CN105900264B true CN105900264B (en) | 2020-06-16 |
Family
ID=51799095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480058594.XA Active CN105900264B (en) | 2013-11-01 | 2014-10-27 | Electrochemical accumulator |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10505174B2 (en) |
| EP (1) | EP3063808B1 (en) |
| CN (1) | CN105900264B (en) |
| DE (1) | DE102013112060A1 (en) |
| WO (1) | WO2015063037A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018204360A1 (en) * | 2018-03-22 | 2019-09-26 | Bayerische Motoren Werke Aktiengesellschaft | Electric storage and method for producing an electrical storage |
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2014
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- 2014-10-27 US US15/032,588 patent/US10505174B2/en active Active
- 2014-10-27 WO PCT/EP2014/073022 patent/WO2015063037A1/en active Application Filing
- 2014-10-27 CN CN201480058594.XA patent/CN105900264B/en active Active
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| WO2011113633A1 (en) * | 2010-03-17 | 2011-09-22 | Robert Bosch Gmbh | Battery contact via adapted two-component connecting elements |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3063808A1 (en) | 2016-09-07 |
| US20160268583A1 (en) | 2016-09-15 |
| EP3063808B1 (en) | 2019-06-26 |
| US10505174B2 (en) | 2019-12-10 |
| CN105900264A (en) | 2016-08-24 |
| DE102013112060A1 (en) | 2015-05-07 |
| WO2015063037A1 (en) | 2015-05-07 |
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